A. M. Abdel-Daiem^a, M. Ahmed^a,, E. R. Shaaban^b,

Chalcogenide Letters, Vol.22, No.2, pp. 131-142, 2025, DOI:10.15251/CL.2025.222.131

Abstract This paper investigates the impact of reduced graphene oxide (rGO) addition on the structural and optical properties of ZnS nanocomposites. The study began with the synthesis of graphene oxide (GO) through the oxidation of natural graphite powder. This process involved using potassium permanganate in a mixture of sulfuric and phosphoric acids, maintained at 50°C for 48 hours. The reaction was terminated using hydrogen peroxide, followed by purification and drying, yielding 1.5 grams of GO. The preparation of ZnS/GO nanocomposites involved dissolving zinc acetate and varying quantities of GO in water, adjusting the pH, and incorporating… More >

L. Gahramanli^a,b,c,*, M. Muradov^a, G. Eyvazova^a, A. Karimova^a, M. Jafarov^b

Chalcogenide Letters, Vol.22, No.2, pp. 109-121, 2025, DOI:10.15251/CL.2025.222.109

Abstract The study presents nanocomposite materials based on Cd_xZn_1-xS, synthesized as thin films and nanoparticles through two distinct techniques—sonochemical and SILAR synthesis techniques. The characteristics of these materials were investigated using X-ray diffraction (XRD), Ultraviolet spectroscopy (UV-Vis), Fourier-transform infrared (FTIR) spectroscopy, and Scanning Electron Microscopy (SEM). In the sonochemical approach, samples were prepared with three different stabilizers for comparative analysis to determine influence of type of the stabilizers. Meanwhile, the SILAR approach created thin layers with different components (distinctive x value-Cd_xZn_1-xS) at various grown temperatures utilizing polyvinyl alcohol (PVA) as a substrate. At the same time, nanocomposite More >

F. F. Tong^a,*, J. L. Han^b

Chalcogenide Letters, Vol.22, No.8, pp. 719-733, 2025, DOI:10.15251/CL.2025.228.719

Abstract In this study, hierarchical ZnS–CNT hybrids were synthesized via a solvothermal reaction at 180 °C for 48 h, producing ∼200 nm ZnS spheres uniformly anchored onto oxidized multiwalled carbon nanotubes. Structural analyses by XRD confirmed the cubic sphalerite phase, while SEM and TEM revealed a “pearl-necklace” morphology and effective nanoparticle dispersion. XPS spectra verified Zn²⁺ and oxygen-containing surface groups on the composite. Nitrogen adsorption–desorption measurements showed that incorporating CNTs transformed the material’s isotherm from type III to type IV, increasing the BET surface area from 68 to 155 m² /g and introducing mesoporosity. When drop-cast onto More >

Q. Fei^1,*, B. Jin², B. C. Jiang³, J. S. Huang⁴, L. Li⁵

Chalcogenide Letters, Vol.22, No.8, pp. 693-705, 2025, DOI:10.15251/CL.2025.228.693

Abstract An innovative hybrid nanostructure composed of diketopyrrolopyrrole (DPP) oligomers and cadmium sulfide (CdS) nanoparticles was developed to enhance the efficiency of organic– inorganic photovoltaic devices. The DPP-CdS hybrids were synthesized via a solution-phase mixing method, resulting in uniform nanoparticle dispersion along polymer fibrils and strong interfacial coupling. Structural characterization confirmed the coexistence of crystalline CdS domains and partially ordered DPP phases, while spectroscopic analyses indicated notable redshifts and band broadening, evidencing electronic interactions at the interface. The hybrid material displayed significantly broadened light absorption across the 400–700 nm range and an optimized optical bandgap of… More >

Markapudi Bhanu Prasad¹, Borhen Louhichi², Santosh Kumar Sahu^1,*

CMES-Computer Modeling in Engineering & Sciences, Vol.145, No.1, pp. 483-519, 2025, DOI:10.32604/cmes.2025.069395 - 30 October 2025

Abstract This study investigates the mechanical behavior of polyurethane (PU) nanocomposites reinforced with nanodiamonds (NDs) and proposes an integrated optimization–prediction framework that combines the Taguchi method with machine learning (ML). The Taguchi design of experiments (DOE), based on an L9 orthogonal array, was applied to investigate the influence of composite type (pure PU, 0.1 wt.% ND, 0.5 wt.% ND), temperature (145°C–165°C), screw speed (50–70 rpm), and pressure (40–60 bar). The mechanical tests included tensile, hardness, and modulus measurements, performed under varying process parameters. Results showed that the addition of 0.5 wt.% ND substantially improved PU performance,… More >

Bandana Padhan¹, Rajkumar Patel², Priyanka Bhowmik³, Ananya Roy¹, Joyjyoti Das^1,*, Yong Yu^4,5, Madhumita Patel^6,*

Journal of Polymer Materials, Vol.42, No.2, pp. 569-570, 2025, DOI:10.32604/jpm.2025.069514 - 14 July 2025

Abstract This article has no abstract. More >

Bandana Padhan^1,#, Rajkumar Patel^2,#, Priyanka Bhowmik³, Ananya Roy¹, Joyjyoti Das^1,*, Yong Yu^4,5, Madhumita Patel^6,*

Journal of Polymer Materials, Vol.42, No.2, pp. 411-433, 2025, DOI:10.32604/jpm.2024.059156 - 14 July 2025

Abstract The food industry prioritizes food safety throughout the entire production process. This involves closely monitoring and evaluating all potential sources of biological or chemical contamination, starting from entering raw materials into the production chain and continuing to the final product. Biofilms on food surfaces or containers can harbor dangerous pathogens, such as Listeria monocytogenes. Therefore, it is essential to continuously manage microbial contamination on food contact surfaces to prevent foodborne infections. Recently, there has been increasing interest in using nanomaterials as surface coatings with antimicrobial properties in the food industry, especially since traditional disinfectants or antibiotics… More >

Nayara Koba de Moura Morgado, Guilherme Ferreira de Melo Morgado, Erick Gabriel Ribeiro dos Anjos, Fabio Roberto Passador^*

Journal of Polymer Materials, Vol.42, No.1, pp. 95-110, 2025, DOI:10.32604/jpm.2025.059364 - 27 March 2025

Abstract The continuous improvement in patient care and recovery is driving the development of innovative materials for medical applications. Medical sutures, essential for securing implants and closing deep wounds, have evolved to incorporate smart materials capable of responding to various stimuli. This study explores the potential of thermoresponsive sutures, made from shape memory materials, that contract upon heating to bring loose stitches closer together, promoting optimal wound closure. We developed nanocomposites based on a blend of poly(lactic acid) (PLA) and thermoplastic polyurethane (TPU)—biopolymers that inherently exhibit shape memory—enhanced with carbon nanotubes (CNT) and graphene nanoplatelets (GN)… More >

Shilpi Tiwari^*, Manjari Srivastava, Dibyendu S. Bag^*

Journal of Polymer Materials, Vol.42, No.1, pp. 187-204, 2025, DOI:10.32604/jpm.2025.057322 - 27 March 2025

Abstract Smart materials with self-healing properties are highly desired. This study investigates graphene-incorporated styrene-isoprene-styrene (SIS) nanocomposites for their self-healing property assisted by Infrared (IR) and microwave radiation. The good thermal conductivity and energy-absorbing capacity of graphene offer self-healing capability to SIS/GnP nanocomposites due to their exposure to IR and microwave radiation. The absorbed energy in graphene is transferred to the SIS matrix, facilitating the diffusion, re-entanglement, and restoration of the SIS polymer chains, resulting in multiple times self-healing capabilities using various external stimuli. All SIS/GnP nanocomposite samples exhibit self-healing behavior, and the healing efficiency rises with… More > Graphic Abstract

Heni Radiani Arifin^1,*, Yoan Christina Angelica¹, Bambang Nurhadi¹, Herlina Marta¹, Rossy Choerun Nissa²

Journal of Renewable Materials, Vol.13, No.3, pp. 617-635, 2025, DOI:10.32604/jrm.2025.057812 - 20 March 2025

Abstract Bionanocomposite film is produced from renewable and biodegradable natural resources. Although elephant foot yam (EFY) starch (Amorphophallus paeoniifolius) is a promising polymer for bionanocomposite film, the native hydrophilic properties influence the overall performance characteristics. Incorporating virgin coconut oil (VCO) and monoglyceride as hydrophobic components can improve mechanical properties and reduce permeability while increasing the hydrophobicity of the composite. Therefore, this study aimed to determine the effect of adding VCO and monoglyceride on EFY starch-nanocrystalline film at 3 and 5 wt% concentrations. Experimental tests were conducted to evaluate the physical and mechanical properties, water vapor transmission rate… More > Graphic Abstract